Home
Class 12
CHEMISTRY
The activation energy for the reaction -...

The activation energy for the reaction -
`H_(2)O_(2)toH_(2)O+(1)/(2)O_(2)`
is `18 K cal//mol` at 300 K. calculate the fraction of molecules of reactonts having energy equal to or greater than activation energy ?
Anti log `(-13.02)=9.36xx10^(-14)`

A

`9.36xx10^(-14)`

B

`1.2xx10^(-12)`

C

`4.2xx10^(-16)`

D

`5.2xx10^(-15)`

Text Solution

Verified by Experts

The correct Answer is:
A

`e^((Eq)/(RT))=e(18000)/(2xx300)=e^(-30)`
`=9.36xx10^(-14)`
Promotional Banner

Similar Questions

Explore conceptually related problems

DeltaH for the reaction at 298 K CO(g)+1//2O_(2)(g) is 282.85 KJ mol^(-1) . Calculate DeltaU of the reaction.

The equilibrium constant for the reaction 2SO_(3(g))hArr2SO_(2(g))+O_(2(g)) is 0.15 at 900 K. Calculate the equilibrium constant for the reaction 2SO_(2(g))+O_(2(g))hArr2SO_(3(g)) at the same temperature.

The standard entropy change for the reaction C_3H_(6(g)) + 9/2O_(2(g)) to 3CO_(2(g)) + 3H_2O_((l)) is – 339.23 JK-1 at 25^@C . Calculate the standard reaction enthalpy change if the standard Gibbs energy of formation of C_3H_(6(g)), CO_(2(g)) and H_2O_((l)) are 62.78, – 394.36 and –237.13 kJ. "mol"^(–1) respectively.

The specific reaction rates of a chemical reaction are 2.45xx10^(-5)sec^(-1)" at "273K and 16.2 xx10^(-4) sec^(-1) at 303 K. Calculate the activation energy.